请阅读下面短文，掌握其大意，然后从36—55各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

Peer pressure can be a powerful force, and sometimes a positive one. For example, hanging out with active peers may lead kids to        more, making a child’s social network a vehicle for promoting healthy habits and        obesity unconsciously.

         The scientists studied networks of a group of students aged 5 to 12 and       how the youngsters’ made and dropped friends, and        effect these changing relationships had on their physical activity level.

In fact, children        their exercise level little by little to better      those in their circle; children who     with more active students were more       to increase their physical activity levels,        those who befriended more sedentary(久坐不动的) children became        active. The children were mirroring, following or adjusting to be        to their friends before they knew it.

The encouraging        suggest a potentially effective way to change children’s behavior.        relying only on organized exercise programs to get moving, perhaps introducing sedentary kids to more active ones — might help more kids        the couch.

It’s believed that this is a possible novel approach to obesity       . The social environment does carry more power than we have given it        for, so we should make use of that intentionally to influence kids.

      that children are increasingly connected to one another,        through face-to-face interactions or virtual ones, their        networks can clearly have a deep effect       many aspects of their behavior-help kids in the long run by turning them into healthier adults.

1.A. sleep                    B. move                       C. exercise                  D. eat

2.A. developing         B. increasing     C. introducing   D. reducing

3.A. tracked                B. informed                C. sorted            D. concluded

4.A. whose                           B. what                        C. that                          D. which

5.A. adjusted              B. insisted          C. appealed                D. devoted

6.A. equal                   B. compete                 C. match             D. compare

7.A. left out                B. hung out                 C. made out                D. figured out

8.A. likely                    B. possible                  C. bound            D. due

9.A. while                    B. though           C. since                        D. because

10.A. more                           B. permanent    C. less                          D. temporary

11.A. familiar              B. similar            C. popular                   D. regular

12.A. causes               B. results            C. reasons                   D. experiments

13.A. More than                 B. Less than                C. Other than    D. Rather than

14.A. get down          B. get off            C. get on            D. get over

15.A. prevention                B. introduction C. discussion     D. information

16.A. honor                         B. approval                 C. agreement    D. credit

17.A. Considered      B. Given             C. Realized                  D. Supposed

18.A. whatever          B. if                     C. however                 D. whether

19.A. social                          B. natural           C. mental           D. physical

20.A. with                   B. for                            C. at                    D. on

I support your decision, but I should also make it clear that I am not going to be _____ to it.

A. connected    B. fastened    C. bound    D. stuck

1 

I support your decision, but I should also make it clear that I am not going to be __________ to carry it out.

A. connected          B. fastened               C. bound                  D. stuck

I support your decision, but I should also make it clear that I am not going to be _____ to it.

A. connected    B. fastened    C. bound    D. stuck

He’s _______ to fail the exam if he doesn’t do any revision.

  A. near       B. fit     C. bound   D. easy